Hi,
Welcome to Health Care Magic,
I am Dr.Naveed Ullah khan,
I have read your question in detail and will try to help you in the best way possible.
It is always important to rule out
pregnancy in a sexually active female. Even birth control pills are not 100% safe. I wiuld like to to get a urine pregnancy test. The tissues that fell out of your vagina might be due to a
miscarriage or just simply a blod clot. It is very important to also get an
ultrasound to check for any residual tissue if it really was a pregnancy.
Also i strongly suggest to use a barrier method of
contraception even if u are on pill. Coz it not only helps u avoid unwanted pregnancies bit also many stds.
I hope this answered all your queries, if you have more queries,I will be happy to answer.
Wish you the best of health.
Regards.
Dr.Naveed Ullah Khan.
MBBS
USMLE step 1, 2 & 3.